What context can I use each word in?
Learn when and how to use these words with these examples!
firebox
Example
The fireman shoveled coal into the firebox to keep the train moving. [firebox: noun]
Example
She added more logs to the firebox to keep the room warm. [firebox: noun]
furnace
Example
The furnace kept the house warm during the winter months. [furnace: noun]
Example
The metal was melted down in the furnace before being poured into molds. [furnace: noun]
Good things to know
Which word is more common?
Furnace is more commonly used than firebox in everyday language. Furnace is a versatile term that covers a wide range of heating devices, while firebox is a more specific term that is often associated with stoves, fireplaces, or steam engines.
What’s the difference in the tone of formality between firebox and furnace?
Both firebox and furnace are technical terms that may be used in formal or informal contexts, depending on the situation and audience.